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Single bus communication system

A communication system, single bus technology, applied in the fields of electronic information and wireless communication systems, can solve problems such as transmission efficiency and signal instability, and achieve the effect of eliminating jitter and flexible programming

Inactive Publication Date: 2015-06-03
林南
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Problems solved by technology

[0003] In order to overcome the problems of signal instability and low transmission efficiency in the existing SPI bus communication system, the present invention provides a high-efficiency SPI bus communication system

Method used

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  • Single bus communication system

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Embodiment Construction

[0009] The principle of the single-bus communication system of the present invention is as follows: figure 1 As shown, the SPI bus communication system, the host is connected to the A / D converter, E2PROM and slave through the serial interface. The input / slave output data line is MISO data line. Single bus (1-Wire) is a peripheral serial expansion bus launched by Dallas Company, which uses a single signal line to complete bidirectional data transmission. The bus technology has three notable features: the single-bus chip transmits address information, control information and data information through a signal line, and can provide power for the single-bus device through the signal line; each single-bus chip has a globally unique When multiple single-bus devices are connected to the same single-bus, access to all single-bus chips is distinguished by the unique serial number; single-bus chips do not need to provide external power during operation, but pass Its own "bus power stea...

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Abstract

Disclosed is a single bus communication system. A host system is connected with a wire device through a bus, a single bus chip transmits address information, control information and data information through a signal line, and the signal line can supply power for a single bus device. A serial interface mode is adopted between the single bus communication system and a CPU (central processing unit), only four port lines are occupied, a decoder is arranged inside the single bus communication system and can directly receive BCD (binary coded decimal) or hexadecimal codes, the single bus communication system simultaneously has two decoding modes, an LED (light-emitting diode) digital tube position addressing and segment addressing are realized, various control commands such as blanking and flash attribute are transmitted, programming is flexible, cyclic left movement and cyclic right movement instructions are transmitted, a driver is arranged inside the single bus communication system and can directly drive an LED (light-emitting diode) without peripheral components, the single bus communication system has a cascading function and further has the functions of automatically eliminating shake and recognizing key values, and a keyboard interface with more than 8-bit display or 64 keys can be conveniently implemented.

Description

technical field [0001] The invention relates to the field of electronic information, in particular to the field of wireless communication systems. Background technique [0002] With the development of electronics and informatization and the continuous increase of demand, communication technology has played an increasingly important and irreplaceable role. The SPI bus system is a synchronous serial peripheral interface that enables the MCU to communicate with various peripheral devices in a serial manner to exchange information. Peripheral settings FLASHRAM, network controller, LCD display driver, A / D converter and MCU and so on. The SPI bus system can directly interface with a variety of standard peripheral devices produced by various manufacturers. The interface generally uses 4 lines: serial clock line (SCK), master input / slave output data line MISO, master output / slave input Data line MOSI and active-low slave selection line SS (some SPI interface chips have interrupt...

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Application Information

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IPC IPC(8): G06F13/40G06F13/42
Inventor 林南
Owner 林南
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